Industrial tail gas collection and treatment equipment and treatment method

Abstract

The present invention discloses an industrial tail gas collection and treatment device and a treatment method, including: a reaction pool; a partition plate, fixed inside the reaction pool, forming two reaction spaces separated from each other; a heat insulation layer, arranged in the center of the partition plate, blocking the heat transfer between the two reaction spaces; wherein, the tail gas reacts after entering the reaction space. The present invention divides the reaction pool into two reaction spaces, and the tail gas passes through one of the reaction spaces in the first time period. After absorbing part of the tail gas, the slurry in one of the reaction spaces flows out in the second time period, while the slurry in the other reaction space absorbs sulfur dioxide, and the slurry with increased temperature in the previous reaction space is removed and filled with new slurry to wait for the next absorption of tail gas, so that the slurry with increased temperature flows away quickly, realizing and maintaining the efficient absorption of sulfur dioxide in the tail gas by the slurry in the reaction pool, thereby effectively improving the slurry temperature increase in the reaction pool to inhibit the absorption and treatment of sulfur dioxide in the tail gas.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment, and in particular to industrial tail gas collection and treatment equipment and a treatment method. Background Art

[0002] Industrial exhaust gas refers to the general term for various pollutant gases discharged into the air during fuel combustion and production processes within an enterprise's factory area.

[0003] The existing process for tail gas desulfurization treatment is that the tail gas passes through the dust collector and enters the absorption tower, where it comes into contact with a reaction tank filled with slurry to produce a chemical reaction, wherein the slurry is a mixed solution of limestone or lime and water. The slurry acts as a desulfurization absorbent and reacts with sulfur dioxide in the tail gas to form calcium sulfate and calcium sulfite. At the same time, calcium sulfate and calcium sulfite react with water and oxygen in the slurry to form gypsum crystals.

[0004] However, when the slurry reacts with sulfur dioxide in the exhaust gas, it is an exothermic reaction, which releases heat, thereby heating the slurry. The increased temperature of the slurry will reduce its internal oxygen content, which will inhibit the slurry from absorbing sulfur dioxide to form gypsum crystals. The existing reaction tank will continuously input slurry into the reaction tank when it is filled with slurry, but it can only alleviate the temperature of the upper layer of the slurry in the reaction tank from rising too quickly. Although it can alleviate the rapid temperature rise of the slurry to a certain extent, there is still room for improvement. Summary of the invention

[0005] The purpose of the present invention is to provide industrial tail gas collection and treatment equipment and treatment method, to treat the slurry heated by absorbing sulfur dioxide gas, thereby effectively improving the slurry temperature increase in the reaction tank to inhibit the absorption and treatment of sulfur dioxide in the tail gas.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Industrial tail gas collection and treatment equipment, including:

[0008] Reaction tank;

[0009] A partition plate is fixed inside the reaction tank to form two reaction spaces separated from each other;

[0010] The heat insulation layer is arranged at the center of the partition plate to block the heat transfer between the two reaction spaces;

[0011] Among them, the tail gas reacts after entering the reaction space, and the slurry that reacts with the sulfur dioxide gas in the reaction space is periodically flowed away in time to quickly fill the lost slurry.

[0012] Preferably, the reaction pool is provided with two flow pipes, the top of the flow pipe is beyond the horizontal plane of the slurry in the reaction pool, an extension ring is provided on the top of the flow pipe, the inner ring of the extension ring is fixedly sleeved on the outer wall of the flow pipe, the outer ring of the extension ring is fixedly connected to the redirecting block, a plurality of small holes are provided in the extension ring, the small holes are fixedly connected to the extension pipes, the lower end of the extension pipe extends into the slurry, so that the exhaust gas entering the flow pipe is redirected through the redirecting block and enters each extension pipe, and then enters the slurry in the form of bubbles and contacts with the slurry for reaction.

[0013] Preferably, the reaction pool is provided with two flow holes, the flow tube is located in the corresponding flow holes and is slidably connected between the flow holes, the reaction pool is also provided with two expansion grooves, the expansion grooves are annular and connected to the corresponding flow holes, the expansion grooves are slidably connected to the sliding rings, the sliding rings are fixedly sleeved on the outer wall of the flow tube, and the flow tube is also provided with a plurality of through holes, the through holes penetrate the wall of the flow tube, when the sliding ring is located at the bottom of the expansion groove, the through holes are located inside the flow holes and are blocked, when the flow tube slides upward, the through holes move out of the flow holes, and the slurry can flow out of the reaction pool through the through holes.

[0014] Preferably, two guide plates are fixed on the reaction tank, the upper sides of the guide plates are provided with inclined slopes, and a groove body is provided at the convergence of the slopes, and the groove body corresponds to the top of the redirection block.

[0015] Preferably, a semi-sphere is provided at the bottom of the circulation tube, the semi-sphere is hollowed out, and a plurality of slots are provided for the tail gas to enter the circulation tube, and a contact component is provided at the bottom of the reaction tank for contacting the semi-sphere and lifting it upward, so that the circulation tube moves upward in the circulation hole.

[0016] Preferably, the contact component is a first contact block, which is located at the bottom of the reaction tank. The first contact block is half of a ring-shaped body, and both ends of the first contact block have inclined surfaces.

[0017] Preferably, the contact component is a second contact block, the second contact block is located at the bottom of the reaction tank, the second contact block is in the form of a ring, and a plurality of grooves are equidistantly arranged on the circumference.

[0018] Preferably, the processing equipment also includes a tower body, the tower body has an air inlet and an exhaust port, the air inlet is located below the reaction tank, the exhaust port is located above the reaction tank, the tower body has a liquid inlet and a liquid outlet, the liquid inlet is located above the reaction tank, and the liquid outlet is located below the reaction tank, and the contact component is fixedly connected to the inside of the tower body.

[0019] Preferably, an annular groove is provided on the inner wall of the tower body, a rotating ring is slidably arranged inside the annular groove, the rotating ring is fixedly connected to an air guide plate, the air guide plate is located below the reaction pool and is fixedly connected to the reaction pool, a plurality of air holes are provided on the air guide plate, and the air holes are arranged on the air guide plate at an inclined angle.

[0020] The processing method of the industrial tail gas collection and processing equipment comprises the following steps:

[0021] The exhaust gas enters from the air inlet, passes through the inclined air holes, and the horizontal component of the wind force on the air guide plate causes the air guide plate to rotate, and then enters the slurry through the circulation pipe to react. When the semi-sphere touches the contact part, the circulation pipe is lifted up, and the slurry flows into the circulation pipe from the perforation and is discharged from the reaction pool. After discharge, the slurry is filled with the slurry on the guide plate, so that the slurry above the guide plate re-enters the reaction pool, and the outflowing slurry flows toward the liquid outlet through the air holes.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention divides a reaction pool into two reaction spaces. In a first time period, the tail gas passes through one of the reaction spaces. After absorbing part of the tail gas, in a second time period, slurry flows out of one of the reaction spaces while slurry in the other reaction space absorbs sulfur dioxide. The slurry with increased temperature in the previous reaction space is removed and filled with new slurry to wait for the next absorption of the tail gas, so that the slurry with increased temperature flows away quickly, thereby achieving and maintaining efficient absorption of sulfur dioxide in the tail gas by the slurry in the reaction pool, thereby effectively improving the absorption treatment of sulfur dioxide in the tail gas inhibited by the increased temperature of the slurry in the reaction pool.

[0024] According to the present invention, the tail gas passes through two reaction spaces in a first time period, and after a portion of the tail gas is absorbed, the slurry in the two reaction spaces flows out in a second time period, and the slurry flowing out of the reaction pool is quickly replenished with new slurry, thereby achieving and maintaining the efficient absorption of sulfur dioxide in the tail gas by the slurry in the reaction pool, thereby effectively improving the absorption treatment of sulfur dioxide in the tail gas by inhibiting the increase in the temperature of the slurry in the reaction pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the industrial tail gas collection and treatment equipment proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the industrial tail gas collection and treatment equipment proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the air guide plate and the partition plate in the industrial tail gas collection and treatment equipment proposed by the present invention;

[0028] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 5 This is a schematic diagram of the structural decomposition between the redirection block and the semi-spherical body in the industrial tail gas collection and treatment equipment proposed by the present invention;

[0030] Figure 6This is a schematic diagram of the structure of the flow slot and the expansion slot on the reaction pool in the industrial tail gas collection and treatment equipment proposed by the present invention;

[0031] Figure 7 This is a structural schematic diagram of the cross section of the air guide plate in the industrial tail gas collection and treatment equipment proposed by the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the first contact block in the tower body of the industrial tail gas collection and treatment equipment proposed by the present invention;

[0033] Fig. 9 This is a schematic diagram of the structure of the second touch block in the tower body of the industrial tail gas collection and treatment equipment proposed by the present invention.

[0034] In the figure: 1, reaction tank; 2, partition plate; 3, insulation layer; 4, circulation pipe; 5, extension ring; 6, redirection block; 7, small hole; 8, extension pipe; 9, circulation hole; 10, expansion groove; 11, sliding ring; 12, perforation; 13, guide plate; 14, groove body; 15, semi-sphere; 16, slot hole; 17, first contact block; 18, second contact block; 19, tower body; 20, air inlet; 21, exhaust port; 22, liquid inlet; 23, liquid outlet; 24, annular groove; 25, rotating ring; 26, wind guide plate; 27, wind hole; 31, groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Reference Figure 1 -Attached Fig. 9 , industrial tail gas collection and treatment equipment, including:

[0037] Reaction tank 1;

[0038] The partition plate 2 is fixed inside the reaction tank 1 to form two reaction spaces separated from each other;

[0039] The heat insulation layer 3 is arranged at the center of the partition plate 2 to block the heat transfer between the two reaction spaces;

[0040] Among them, the tail gas reacts after entering the reaction space, and the slurry that reacts with the sulfur dioxide gas in the reaction space is periodically flowed away in time to quickly fill the lost slurry.

[0041] The reaction pool 1 is provided with two flow pipes 4, the top of the flow pipe 4 exceeds the horizontal plane of the slurry in the reaction pool 1, and an extension ring 5 is provided on the top of the flow pipe 4. The inner ring of the extension ring 5 is fixedly sleeved on the outer wall of the flow pipe 4, and the outer ring of the extension ring 5 is fixedly connected to the redirecting block 6. The extension ring 5 has a plurality of small holes 7, and the small holes 7 are fixedly connected to the extension pipe 8. The lower end of the extension pipe 8 extends into the slurry, so that the exhaust gas entering the flow pipe 4 is redirected through the redirecting block 6 and enters each extension pipe 8, and then enters the slurry in the form of bubbles and contacts with the slurry for reaction.

[0042] The reaction pool 1 is provided with two flow holes 9, and the flow tube 4 is located in the corresponding flow holes 9 and is slidably connected between the flow holes 9. The reaction pool 1 is also provided with two expansion grooves 10, which are annular and connected to the corresponding flow holes 9. The expansion groove 10 is internally slidably connected with a sliding ring 11, and the sliding ring 11 is fixedly sleeved on the outer wall of the flow tube 4. The flow tube 4 is also provided with a plurality of through holes 12, and the through holes 12 penetrate the wall of the flow tube 4. When the sliding ring 11 is located at the bottom of the expansion groove 10, the through hole 12 is located inside the flow hole 9 and is in a blocked state. When the flow tube 4 slides upward, the through hole 12 moves out of the flow hole 9, and the slurry can flow out of the reaction pool 1 through the through hole 12.

[0043] Two guide plates 13 are fixed on the reaction tank 1. The upper side of the guide plate 13 has an inclined slope. A groove body 14 is opened at the convergence of the slopes. The groove body 14 corresponds to the top of the redirection block 6, which is convenient for filling new slurry to pass through the position where the bubbles are formed faster.

[0044] A semi-sphere 15 is arranged at the bottom of the circulation tube 4. The semi-sphere 15 is hollow and has a plurality of slots 16 for the tail gas to enter the circulation tube 4. A contact component is arranged at the bottom of the reaction tank 1 to contact the semi-sphere 15 and lift it upward, so that the circulation tube 4 moves upward in the circulation hole 9.

[0045] The contact component is a first contact block 17, which is located at the bottom of the reaction tank 1. The first contact block 17 is half of a ring body, and both ends of the first contact block 17 have inclined surfaces.

[0046] Through the above technical scheme, the reaction tank 1 is divided into two reaction spaces. In the first time period, the exhaust gas passes through one of the reaction spaces. After absorbing part of the exhaust gas, the slurry in one of the reaction spaces flows out in the second time period, while the slurry in the other reaction space absorbs sulfur dioxide. The slurry with increased temperature in the previous reaction space is removed and filled with new slurry to wait for the next absorption of the exhaust gas, so that the slurry with increased temperature flows away quickly, realizing and maintaining the efficient absorption of sulfur dioxide in the exhaust gas by the slurry in the reaction tank 1, thereby effectively improving the increase in the temperature of the slurry in the reaction tank 1 to inhibit the absorption of sulfur dioxide in the exhaust gas.

[0047] The contact component is a second contact block 18, which is located at the bottom of the reaction tank 1. The second contact block 18 is an annular body, and a plurality of grooves 31 are equidistantly arranged on the circumference.

[0048] Through the above technical scheme, the exhaust gas passes through two reaction spaces in the first time period, and after absorbing part of the exhaust gas, the slurry in the two reaction spaces flows out in the second time period, and the slurry flowing out of the reaction tank 1 will be quickly filled with new slurry, thereby realizing and maintaining the efficient absorption of sulfur dioxide in the exhaust gas by the slurry in the reaction tank 1, thereby effectively improving the temperature increase of the slurry in the reaction tank 1 to inhibit the absorption and treatment of sulfur dioxide in the exhaust gas.

[0049] The processing equipment also includes a tower body 19, which has an air inlet 20 and an exhaust port 21. The air inlet 20 is located below the reaction pool 1, and the exhaust port 21 is located above the reaction pool 1. The tower body 19 has a liquid inlet 22 and a liquid outlet 23. The liquid inlet 22 is located above the reaction pool 1, and the liquid outlet 23 is located below the reaction pool 1. The contact component is fixedly connected to the inside of the tower body 19.

[0050] An annular groove 24 is provided on the inner wall of the tower body 19, a rotating ring 25 is slidably arranged inside the annular groove 24, the rotating ring 25 is fixedly connected to an air guide plate 26, the air guide plate 26 is located below the reaction pool 1 and is fixedly connected to the reaction pool 1, a plurality of air holes 27 are provided on the air guide plate 26, and the air holes 27 are arranged on the air guide plate 26 at an inclined angle.

[0051] Working principle:

[0052] The exhaust gas enters from the air inlet 20, passes through the inclined air holes 27, and the horizontal component of the wind force on the air guide plate 26 causes the air guide plate 26 to rotate, and then enters the slurry through the circulation tube 4 to react. When the semi-sphere 15 touches the contact part, the circulation tube 4 is lifted up, and the slurry flows into the circulation tube 4 from the perforation 12 and is discharged from the reaction tank 1. After being discharged, the slurry is filled with the slurry on the guide plate 13, so that the slurry above the guide plate 13 re-enters the reaction tank 1, and the outflowing slurry flows toward the liquid outlet 23 through the air holes 27.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Industrial tail gas collection and treatment equipment, characterized in that: include: Reaction tank (1); A partition plate (2) is fixed inside the reaction tank (1) to form two reaction spaces separated from each other; A heat insulation layer (3) is arranged at the center of the partition plate (2) to block heat transfer between the two reaction spaces; Among them, the tail gas reacts after entering the reaction space, and the slurry that reacts with the sulfur dioxide gas in the reaction space is periodically flowed away in time to quickly fill the lost slurry; The reaction pool (1) is provided with two flow pipes (4), the top of the flow pipe (4) is higher than the horizontal plane of the slurry in the reaction pool (1), an extension ring (5) is provided at the top of the flow pipe (4), the inner ring of the extension ring (5) is fixedly sleeved on the outer wall of the flow pipe (4), the outer ring of the extension ring (5) is fixedly connected to the redirection block (6), a plurality of small holes (7) are provided in the extension ring (5), the small holes (7) are fixedly connected to the extension pipe (8), the lower end of the extension pipe (8) extends into the slurry, so that the exhaust gas entering the flow pipe (4) is redirected through the redirection block (6) and enters each extension pipe (8), and then enters the slurry in the form of bubbles and contacts with the slurry for reaction; The reaction pool (1) is provided with two flow holes (9), the flow tube (4) is located in the corresponding flow holes (9) and is slidably connected to the flow holes (9), the reaction pool (1) is further provided with two expansion grooves (10), the expansion grooves (10) are annular and are connected to the corresponding flow holes (9), the expansion grooves (10) are slidably connected to the sliding rings (11), the sliding rings (11) are fixedly sleeved on the outer wall of the flow tube (4), the flow tube (4) is further provided with a plurality of through holes (12), the through holes (12) penetrate the wall of the flow tube (4), when the sliding rings (11) are located at the bottom of the expansion grooves (10), the through holes (12) are located inside the flow holes (9) and are in a blocked state, when the flow tube (4) slides upward, the through holes (12) move out of the flow holes (9), and at this time the slurry flows out of the reaction pool (1) through the through holes (12); The treatment device further comprises a tower body (19), the tower body (19) having an air inlet (20) and an air outlet (21), the air inlet (20) being located below the reaction pool (1), the air outlet (21) being located above the reaction pool (1), the tower body (19) having a liquid inlet (22) and a liquid outlet (23), the liquid inlet (22) being located above the reaction pool (1), the liquid outlet (23) being located below the reaction pool (1), and the contact component being fixedly connected to the interior of the tower body (19); An annular groove (24) is provided on the inner wall of the tower body (19), a rotating ring (25) is slidably arranged inside the annular groove (24), the rotating ring (25) is fixedly connected to an air guide plate (26), the air guide plate (26) is located below the reaction pool (1) and is fixedly connected to the reaction pool (1), a plurality of air holes (27) are provided on the air guide plate (26), and the air holes (27) are arranged to penetrate the air guide plate (26) at an inclined angle.

2. The industrial tail gas collection and treatment equipment according to claim 1, characterized in that: Two guide plates (13) are fixed on the reaction tank (1). The upper side of the guide plates (13) has an inclined slope surface. A groove body (14) is provided at the convergence point of the slope surfaces. The groove body (14) corresponds to the top of the redirection block (6).

3. The industrial tail gas collection and treatment equipment according to claim 1, characterized in that: A semi-spherical body (15) is arranged at the bottom of the circulation pipe (4); the semi-spherical body (15) is hollowed out and has a plurality of slots (16) for the tail gas to enter the circulation pipe (4); a contact component is arranged at the bottom of the reaction pool (1) for contacting the semi-spherical body (15) and lifting it upwards, so that the circulation pipe (4) moves upwards in the circulation hole (9).

4. The industrial tail gas collection and treatment equipment according to claim 3, characterized in that: The contact component is a first contact block (17). The first contact block (17) is located at the bottom of the reaction pool (1). The first contact block (17) is half of a ring-shaped body, and both ends of the first contact block (17) have inclined surfaces.

5. The industrial tail gas collection and treatment equipment according to claim 3, characterized in that: The contact component is a second contact block (18), the second contact block (18) is located at the bottom of the reaction pool (1), the second contact block (18) is in the form of a ring, and a plurality of grooves (31) are provided at equal intervals on the circumference.

6. The method for processing industrial tail gas collection and processing equipment according to any one of claims 1 to 5, characterized in that: The following steps are involved: The exhaust gas enters from the air inlet (20), passes through the inclined air holes (27), and the horizontal component of the wind force on the air guide plate (26) causes the air guide plate (26) to rotate, and then enters the slurry through the circulation pipe (4) to react. When the semi-circular sphere (15) touches the contact component, the circulation pipe (4) is lifted up, and the slurry flows into the circulation pipe (4) from the perforation (12) and is discharged from the reaction pool (1). After being discharged, the slurry is filled with the slurry on the guide plate (13), so that the slurry above the guide plate (13) re-enters the reaction pool (1), and the outflowing slurry flows toward the liquid outlet (23) through the air holes (27).

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